Parity partners in the baryon resonance spectrum
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1103/PhysRevC.96.015208 http://hdl.handle.net/11449/163080 |
Resumo: | We describe a calculation of the spectrum of flavor-SU(3) octet and decuplet baryons, their parity partners, and the radial excitations of these systems, made using a symmetry-preserving treatment of a vector x vector contact interaction as the foundation for the relevant few-body equations. Dynamical chiral symmetry breaking generates nonpointlike diquarks within these baryons and hence, using the contact interaction, flavor-antitriplet scalar, pseudoscalar, vector, and flavor-sextet axial-vector quark-quark correlations can all play active roles. The model yields reasonable masses for all systems studied and Faddeev amplitudes for ground states and associated parity partners that sketch a realistic picture of their internal structure: ground-state, even-parity baryons are constituted, almost exclusively, from like-parity diquark correlations, but orbital angular momentum plays an important role in the rest-frame wave functions of odd-parity baryons, whose Faddeev amplitudes are dominated by odd-parity diquarks. |
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Repositório Institucional da UNESP |
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Parity partners in the baryon resonance spectrumWe describe a calculation of the spectrum of flavor-SU(3) octet and decuplet baryons, their parity partners, and the radial excitations of these systems, made using a symmetry-preserving treatment of a vector x vector contact interaction as the foundation for the relevant few-body equations. Dynamical chiral symmetry breaking generates nonpointlike diquarks within these baryons and hence, using the contact interaction, flavor-antitriplet scalar, pseudoscalar, vector, and flavor-sextet axial-vector quark-quark correlations can all play active roles. The model yields reasonable masses for all systems studied and Faddeev amplitudes for ground states and associated parity partners that sketch a realistic picture of their internal structure: ground-state, even-parity baryons are constituted, almost exclusively, from like-parity diquark correlations, but orbital angular momentum plays an important role in the rest-frame wave functions of odd-parity baryons, whose Faddeev amplitudes are dominated by odd-parity diquarks.National Natural Science Foundation of ChinaFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)US Department of Energy, Office of Science, Office of Nuclear PhysicsChinese Ministry of EducationAlexander von Humboldt FoundationNanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R ChinaUniv Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271, BR-01140070 Sao Paulo, SP, BrazilArgonne Natl Lab, Div Phys, Argonne, IL 60439 USATech Univ Munich, Phys Dept, James Franck Str 1, D-85748 Garching, GermanyJoint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R ChinaUniv Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz 271, BR-01140070 Sao Paulo, SP, BrazilNational Natural Science Foundation of China: 11475085National Natural Science Foundation of China: 11535005National Natural Science Foundation of China: 11690030FAPESP: 2015/21550-4US Department of Energy, Office of Science, Office of Nuclear Physics: DE-AC02-06CH11357Amer Physical SocNanjing UnivUniversidade Estadual Paulista (Unesp)Argonne Natl LabTech Univ MunichJoint Ctr Particle Nucl Phys & CosmolLu, YaChen, Chen [UNESP]Roberts, Craig D.Segovia, JorgeXu, Shu-ShengZong, Hong-Shi2018-11-26T17:40:00Z2018-11-26T17:40:00Z2017-07-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article11application/pdfhttp://dx.doi.org/10.1103/PhysRevC.96.015208Physical Review C. College Pk: Amer Physical Soc, v. 96, n. 1, 11 p., 2017.2469-9985http://hdl.handle.net/11449/16308010.1103/PhysRevC.96.015208WOS:000406536800009WOS000406536800009.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysical Review C1,443info:eu-repo/semantics/openAccess2023-12-28T06:14:56Zoai:repositorio.unesp.br:11449/163080Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-28T06:14:56Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Parity partners in the baryon resonance spectrum |
title |
Parity partners in the baryon resonance spectrum |
spellingShingle |
Parity partners in the baryon resonance spectrum Lu, Ya |
title_short |
Parity partners in the baryon resonance spectrum |
title_full |
Parity partners in the baryon resonance spectrum |
title_fullStr |
Parity partners in the baryon resonance spectrum |
title_full_unstemmed |
Parity partners in the baryon resonance spectrum |
title_sort |
Parity partners in the baryon resonance spectrum |
author |
Lu, Ya |
author_facet |
Lu, Ya Chen, Chen [UNESP] Roberts, Craig D. Segovia, Jorge Xu, Shu-Sheng Zong, Hong-Shi |
author_role |
author |
author2 |
Chen, Chen [UNESP] Roberts, Craig D. Segovia, Jorge Xu, Shu-Sheng Zong, Hong-Shi |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Nanjing Univ Universidade Estadual Paulista (Unesp) Argonne Natl Lab Tech Univ Munich Joint Ctr Particle Nucl Phys & Cosmol |
dc.contributor.author.fl_str_mv |
Lu, Ya Chen, Chen [UNESP] Roberts, Craig D. Segovia, Jorge Xu, Shu-Sheng Zong, Hong-Shi |
description |
We describe a calculation of the spectrum of flavor-SU(3) octet and decuplet baryons, their parity partners, and the radial excitations of these systems, made using a symmetry-preserving treatment of a vector x vector contact interaction as the foundation for the relevant few-body equations. Dynamical chiral symmetry breaking generates nonpointlike diquarks within these baryons and hence, using the contact interaction, flavor-antitriplet scalar, pseudoscalar, vector, and flavor-sextet axial-vector quark-quark correlations can all play active roles. The model yields reasonable masses for all systems studied and Faddeev amplitudes for ground states and associated parity partners that sketch a realistic picture of their internal structure: ground-state, even-parity baryons are constituted, almost exclusively, from like-parity diquark correlations, but orbital angular momentum plays an important role in the rest-frame wave functions of odd-parity baryons, whose Faddeev amplitudes are dominated by odd-parity diquarks. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07-28 2018-11-26T17:40:00Z 2018-11-26T17:40:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevC.96.015208 Physical Review C. College Pk: Amer Physical Soc, v. 96, n. 1, 11 p., 2017. 2469-9985 http://hdl.handle.net/11449/163080 10.1103/PhysRevC.96.015208 WOS:000406536800009 WOS000406536800009.pdf |
url |
http://dx.doi.org/10.1103/PhysRevC.96.015208 http://hdl.handle.net/11449/163080 |
identifier_str_mv |
Physical Review C. College Pk: Amer Physical Soc, v. 96, n. 1, 11 p., 2017. 2469-9985 10.1103/PhysRevC.96.015208 WOS:000406536800009 WOS000406536800009.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physical Review C 1,443 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
11 application/pdf |
dc.publisher.none.fl_str_mv |
Amer Physical Soc |
publisher.none.fl_str_mv |
Amer Physical Soc |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803650103056007168 |